Door-motor controller.



' J; F. McBUIOY. 006R mom CONTROLLER. APPLICATION FILED JUNE 29, 1912.

Patented Jan. 18, 1916.

3 SHEETS-"SHEET I.

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WITNESSES: INVENTOR ATTY.

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J. F.'McELROY.- DOOR MOTOR CONTROLLER.

APPLICATION HLED IUNE 29,1912.

3 SHEETS-SHEET 3.

WITNESSES: INVENTOR.

ATTY

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Patented Jan. 18,1916.

- motor itself.

' cvlinderfor tpower linder 1, The ad iiission of air to the righthandendot cylinder". 1 will movethe cont ecte d cross heads toI- th'e i v Own-i15 F g-4,.

UNITED STATES TENT oEFI-on JAMES MQELR'OY, 0 NKNEW"YoR-K,-5Ass1GNonTo coivsorlnnnru'n HEATING. COMPANY, A CORPORATION or wnsr VIRGINIA.

DOOR-MOTOR CONTROLLER.

To all whom it may concern: I

Be it known that 1, JAMES F. MoELRoY, a citizen of the United States, residing at Albany, county of Albany, State of New York, have invented certain new and useful Improvements in Door-Motor Controllers,

the following being a full, clear, and exact disclosure of .the one. form of my invention which I at present deem preferable.

For a. detailed description of the present form of'my invention, reference may be had to the following specification and to the ac companying drawings, which illustrate my invention, wherein- Figure 1 shows my apparatus diagram,- matically; Figs. 2 and 3 show in plan view the motor switch; Figs. at and 5 show the manual controlling switch, and Fig. 6 a perspective view of the motor switch.

My invention relates to the control of a motor, such as a door motor, by means of electromagnetic devices and, in general, I provide that the manual switch which serves as the immediate controlling agency shall be retained in either of its extreme positions by meansot' an electromagnehthe circuit of which is controlled by the movement of the By this means the initial movement of the controlling switch to one position or the other will insure the continued operation of the motor through its entire range of movement, at the end of which movement it automatically releases the manual switch and the consequent return of that switch to its neutral. position will automatically release the air pressure on the motor, so that in neither one of its extreme positions will the motor receive the continned presence of the air pressure.

Turning to Fig. 1, A represents the motor and D the door operated thereby. This motor is of a construction which is now well known. being shown in my Patent No; 1,002,596. dated September 5, 1911. and it 1 includes two oppositely placed air .c vl inders, l and which act opposit y upon two connectcd'erosshfii! dsfi and .4: which are connectmeans olt atlink There ed to -,door lQiby are; also two.- para el former,otavhich;isia-hdash-potlcylindersiior r r Y, oted'armse'l and 43 which are drawn topower cylinder and the latter a, .{sim ila Specification of Letters Patent.

. Patented Jan. 18,1916. Application filed June 29, 1912. 1 Serial No. 706,781. r

wherein the door is represented in its. position, while the admission of air to the left hand end of cylinder 2:will move the cross heads anddoor to the right to, close" the 'door, it being understood that: infeach case the cylinder which is not acting has its exhaust port open. Each of these cylinders is controlled by means of an electromagnetic valve, the valve for cylinder 1' being shown at B and that for cylinder 2"at B fwhile the magnets which operate the respectiye valves are shown atC and C Thesem'ag nets C and C are duplicates of-each other,

asare also the valves B and B' and the de-. tailed showing of one maybe taken asidentical with that of the other. Refer'ringpar tioularly to valve B and its magnet C the energizing of the magnet will'force down a rod...32 passing through the 'magnet'core 33, which rod embraces the end of the stem of puppet valve 26, whichis the admission valve, and acts to depress that valve-against the force. of its seating spring 22, thereby opening the admission port and allowing air I to flow from supply .pipe13 through branch Hand through the admission port which hutting the admission port and tween core 33 and the magnetshell 30,. said shell being surmounted by'a screw cap within which is the armature disk .36 that bridges from core to shell, but is normally held away therefrom by spring 371,,

E and Ffiare two-switches placed at separate points of control, such as the-two ends of a car. assuming the door D to be a can door. By means of, either of these switches eitherof the magnets C or C mav be either. energized. or deenergized. Eachswitch contains a lever 41.pivoted to a plate 5 40. on the base of the switch The leveriat it's pivotal'point is embraced.betweentwo pivgether by; a spring. which connects their outer extremities. These levers 42 and 43 thus serveto center the leverel and bring it to. its central position after it has beenjmoved"to"v one sidezor the other. On the underside oi -leverl41 is secured a finlllrecontact plate 44 of magnetic material wh1ch',1, when the leveri'sfmoved to one side 3 pr the other comes into. engagement with the poles of one of the electromagnets or 46, 'wlnchpoles also serve as contact terminals for the wires 60"and 61. The contact of the plate ,44iwith the said magnet poles there- ;i'fore. serves to close the electric circuit from -the battery- F and the plate 40 to either thewire 60 or the wire 61, and thereby ergizeithe magnet 46 or the magnet 45, ai'sjflm case may be, which thereupon attracts the.rnagnetic plate 44 and retains the lever 1 in whichever-of the two extreme positions been set. The wire 61 leads to the magnet and thence to the contact 70 of l-ll 'liidtor SWltCh. The motor switch is shown on enlarged scale in Figs. 2 and 6, it

giiinderstood that its purpose is to autom fc'ally breakthe circuit, which has been as aforesaidby the switch E when thefniotor reaches the limit of its travel. The switch-lever cooperating with the afore- -.Sai d contact-.70-is shown at 7 4 in Figs. 2 and and .the circuit from contact 7 0,'to which git-has been heretofore traced, will proceed bjthe said switch lever 74 to the retracting ,spring 75, 'to switch lever-71, to the block 72, to the wire 7 3 which leads to the opposite sidejof thebatteiy F. Closure of this circuit will cause magnet C to operate and admit air through pipe 12 to the cylinder 2, which, gag-as aforesaid, will cause the movement of the connected cross heads 3 and 4 toward the light to close theidoor.

carries a pin (see --Figs. 2 and 3) which,

when the cross head reaches the limit of its In like manner, when the lever 41 of switch E is moved to the right, it will bring the plate 44: into contact with the poles of the magnet 46 and thereby close the circuit to the wire 60. from battery F and the plate 40.

This will energize the magnet 46 and also the valve magnet which, like the.magnet C is controlled by the motor switch. The contact of this motor switch to which the wire from magnet C is connected is marked 76, in Figs. 2 and 6, and the switch lever which cooperates therewith is shown at 71 The switch lever 71 is shown in its open position, being engaged by the pin 80 on cross head 3, which corresponds to pin 50 on cross head 4,

by Letters Patent is:

The cross head 4' it being assumed that this cross head is in ts extreme door-opening position, as shown in Fig. 1. The switch E is a duplicate of switchE and will, in like manner, serve to close the circuit of magnet C or magnet C according as its lever 41 is moved to the right or to the left. In both cases it-will be apparent that when the door motor reaches either limit of its travel it will automatically open the circuit which, by its closure, has initiated the motor action and that this breaking of the circuit will also release the switch lever, which has closed the circuit and which at the same time has been retained in its circuit-closing position by the magnet 45 or 46.

It will be understood that by a doormotor I intend to include motors of the same type which have a prescribed range of action.

A conspicuous advantage of my arrangement is that the motorman or guard who operates the door needs only to move the switch and let go of it without waiting and holding it till the door is closed, or watching to see that after the door closes the switch handle is brought back to-its central position.

What I claim as new and desire to secure .1.' The combination with a'reciprocating door motor and a plurality of valves controlling the operation of said motor, of a controller for said valves, electromagnetic means for attracting said controller to maintain the same in operating position, means controlled by the progress of the door for controlling the circuit to said electromagnetic means, and means for normally maintaining said controller in inoperative position.

2. The combination with a reciprocating door motor and a plurality of valves controlling the operation of said motor, of a controller-for said valves, electromagnetic means for attracting said controller to maintain the same in either of two operating positions, means operated by the motor at or near each end "of its range of movement for controlling the circuit to said electro-mag-. netic means, and meansfor normally maintaining said controller in inoperative position. Y

3. The combination witha door motor, of valves controlling the direction of movement thereof, electromagnets for operating said valves, a controller for said valves, electro-magnetic means for attracting said con troller to maintain the same in operating position, means for normally maintaining said controller in inoperativeposition, and contact devices in the circuit of said electromagnetic means, said contact devicesbeing operated by the door motor.

' 4. The combination with a door motor, of valves controlling the direction of movement ciiit controlling devices in the said circuits operatedby the motor.

valves, a controller for said 'alves, spaced apart retaining magnets for attracting said controller to maintain the same in operating position, means for normally maintainingsaid controller in inoperative position, and circuit breakers iii the circuits of said retaining magnets operated by the motor at or near the ends of its range of movement.

5. The combination with a reciprocating door motor having admission and exhaust ports for both directions of movement, of electromagnetic valves controlling said ports, a controller for selectively closing the circuits to said magnets, magnetic retaining means for attracting said controller to main tain the same in operating position, means for normally maintaining said controller in inoperative position, and circuit controlling devices in the circuits of said retaining means, operated by the motor at or near each end of its range of movement.

6. The combination \vitha pressure door motor. of electro-iiiagnetic valves controlling'tlie same, a controllerfor said 'alves, spaced apart elcctroinagiiets in the same circiiit with the valves for attracting said controller to maintain the same in operating position, means tor normally maintaining said controller in inoperative. position, and' 011'- 7. The combination with a double acting pressure door motor having separate admissioii and exhaust ports tor each direction of movement. valves control-ling the admission and exhaust ports, a separate electromagnct for each set of valves controlling the respective sets ofports. a controller for said magnets, elcctro-magnetic means for attracting said controller to maintain the same in operating position, means for normally maintaining the controller in inoperative position. and means operated by the motor for breaking'the circuit to said electromagnetic controller-retaining means.

8. The combination with a pressure door motor, of two controlling valves therefor, two electro-iiiagnets in separate circuits for operating the respective valves, a single controller for both of said magnetic circuits, normally stationary contact members in the respective circuits having means for normally maintaining closed circuits to said,

electro-inagnets, and means connected with a movable part of the motor to impart movement to one or the other ofsaid contact devices as-the motor reaches the end of each stroke, to break the circuit. a

9. The combination with a pressure door motor, of two controlling valves therefor, two electro-magnets in separate circuits for operating the respective valves, a single controller for both of said magnetic circuits, normally stationarycontact me-ii'ibers in the respective circuits having means for normally maintaining closed circuits to said electromagnets, means connected with a movable part of the motor to impart movement to one or the other of said contact devices as the motor reaches the end of each stroke, to break the circuit, 'a controller for said electromagnets, means for retaining said controller in operative position when moved to close the circuit to either of said magnets, and means for normally holding saidcom troller in inoperative "position.

10. The combination with a pressure door motor, of two controlling valves therefor,

two electro-magnets in separate circuits for operating the respective valves, a" single controller for both of said magnetic circuits,

same in either of the two valve magnet 'circuits, said retaining magnets being alio ircluded in the valve magnet circuits.

11. The combination with a door motor,

of two controlhng switches therefor, two valve magnets either of which may be energized or deenergized by either of said controlling switehes, and electro-magnet means controlled by th'eqicft'ion of a motor, for attracting said switches to maintain them in operative position. 1 1

12. The combination with a double acting door motor having two cylinders for the respective movements, of a supply pipe, branches from said pipe leading to the respective cylinders, each branch being provided with admission and,control valves, electromagnets for operating the respective valves, a switch for the said magnets, electromagnetic devices for attracting said switch to maintain the same in operative position, and a circuit controller for the valve magnets and the retaining means, operated by the motor.

In witness whereof I have hereunto set my hand, before two subscribing witnesses,

Witnesses: 4

Hnnsnirr A. CAULKINS, CLARENCE PALMER. i 

